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[{"key": "dc.contributor.author", "value": "Outinen, Hilla", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-12-20T09:43:28Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-12-20T09:43:28Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/79040", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4n pro gradu -tutkielman tarkoituksena oli selvitt\u00e4\u00e4, onko syd\u00e4men sykev\u00e4liv\u00e4livaihtelumuuttujien ja syd\u00e4men veren virtauksen (MBF), hapen ekstraktion (OEF), syd\u00e4men hapenkulutuksen (MVO2), syd\u00e4men veritilavuuden (MBV), syd\u00e4men veren l\u00e4pivirtausajan (MTT), vaskulaarisen resistanssin (MVR) ja syd\u00e4men pumppauksen taloudellisuuden (ME) v\u00e4lill\u00e4 tilastollisia yhteyksi\u00e4. Lis\u00e4ksi tutkittiin, ett\u00e4 selitt\u00e4\u00e4k\u00f6 tutkittavien kuntotaso, painoindeksi, ik\u00e4 tai rasituksen aikaansaama sykkeennousu mahdollisia yhteyksi\u00e4. Autonomisen hermoston vaikutukset syd\u00e4men toimintaan ovat melko hyvin tiedossa, mutta vastaavia tutkimuksia, joissa olisi tutkittu sykev\u00e4livaihtelumuuttujien yhteyksi\u00e4 edell\u00e4 mainittuihin syd\u00e4nmuuttujiin ei ole tiedett\u00e4v\u00e4sti aiemmin juurikaan tehty. Aiemmissa tutkimuksissa on l\u00f6ydetty, ett\u00e4 syd\u00e4men autonominen toiminta on yhteydess\u00e4 verenvirtauksen ja -reservin kanssa. Syd\u00e4men toimintaa kuvaavat muuttujat mitattiin PET-tutkimuksen avulla. Sek\u00e4 sykev\u00e4livaihtelumuuttujia, ett\u00e4 PET-syd\u00e4nmuuttujia mitattiin sek\u00e4 levossa, ett\u00e4 rasituksessa. Kuormitus suoritettiin py\u00f6r\u00e4ergometrill\u00e4 selinmakuulla. Tutkimuksessa hy\u00f6dynnettiin EXEHEART-tutkimuksen aineistoa. Koehenkil\u00f6in\u00e4 oli 26 tervett\u00e4, hyvin erikuntoista miest\u00e4, joiden keski-ik\u00e4 oli 30 vuotta.\nKaikkien sykev\u00e4livaihtelumuuttujien arvot laskivat rasituksessa lepoon verrattuna, paitsi LF/HF-suhde kasvoi. Syd\u00e4men PET-muuttujien osalta rasituksessa nousivat MBF, MVO2 ja OEF kun MBV, MTT ja MVR laskivat. Levossa PET-syd\u00e4nmuuttujien ja sykev\u00e4livaihtelumuuttujien v\u00e4lilt\u00e4 ei l\u00f6ytynyt merkitsevi\u00e4 yhteyksi\u00e4. Rasituksessa MTT korreloi positiivisesti RMSSD:n (r=.552, p=.004) ja HF:n (r=.511 ja p=.009) kanssa. Lis\u00e4ksi veritilavuus korreloi HF:n kanssa (r=.414, p=.040) ja verenvirtaus RMSSD:n kanssa (r=-.418, p=.037). Muuttujille laskettiin lis\u00e4ksi lepo- ja rasitustilanteen arvon erotus. Muutosarvojen perusteella tehdyist\u00e4 korrelaatioista merkitsevi\u00e4 yhteyksi\u00e4 sykev\u00e4livaihtelumuuttujien ja PET-muuttujien v\u00e4lilt\u00e4 ei l\u00f6ytynyt. Lis\u00e4ksi tutkittiin viel\u00e4 sykev\u00e4livaihtelumuuttujien ja PET-muuttujien yhteyksi\u00e4 koehenkil\u00f6iden kuntotasoon, rasituksen aiheuttamaan sykkeen nousuun, ik\u00e4\u00e4n ja painoindeksiin. Sykkeen muutos oli yhteydess\u00e4 RMSSD:n, LF:n ja HF:n kanssa. Kuntotaso korreloi RMSSD:n ja HF:n kanssa, kun PET-syd\u00e4nmuuttujista syd\u00e4men verenvirtaus oli yhteydess\u00e4 sykkeen muutokseen ja kuntotasoon. Tulokset olivat osittain ristiriidassa aiempaan v\u00e4h\u00e4iseen tutkimustietoon. Aiheeseen liittyviss\u00e4 jatkotutkimuksissa voisi olla mukana my\u00f6s muita urheilulajien edustajia kuin kest\u00e4vyysurheilijoita. Lis\u00e4ksi olisi t\u00e4rke\u00e4\u00e4 saada tutkittua yhteyksi\u00e4 eri rasitustasoilla, jotta saataisiin lis\u00e4tietoa kuntotason vaikutuksesta.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The purpose of this master's thesis was to determine whether there are connections between\nheart rate variability (HRV) variables and myocardial blood flow (MBF), oxygen extraction\nfraction (OEF), cardiac oxygen consumption (MVO2), cardiac blood volume (MBV), blood\nmean transit time (MTT), vascular resistance (MVR). and the efficiency of cardiac pumping\n(ME) and to investigate whether the fitness level, body mass index, age or exercise-induced\nincrease in heart rate explain possible links. The effects of the autonomic nervous system on\ncardiac function are fairly well known, but similar studies investigating the association of heart\nrate variables with the above-mentioned cardiac variables have not been known in the past.\nPrevious studies have found that the autonomic function of the heart is related to both\nmyocardial blood flow and its reserve.\nVariables describing cardiac function were measured using a positron emission tomography.\nBoth HRV variables and PET cardiac variables were measured at rest and during supine bicycle\nexercise at 100 W. The material of the EXEHEART study was utilized in the study. The subjects\nwere 26 voluntary healthy men of various conditions, with a mean age of 30 years.\nThe values of all HRV variables decreased during exercise compared to rest, except for an\nincrease in the LF/HF ratio. MBF, MVO2 and OEF increased in exercise, while MBV, MTT\nand MVR decreased. At rest, no statistically significant correlations were found between PET\ncardiac variables and HRV variables. During exercise, MTT correlated with RMSSD (r=.552,\np=.004) and HF (r=.511 and p=.009). In addition, MBV correlated with HF (r =.414, p=.040)\nand MBF with RMSSD (r=-. 418, p=.037). Also, the difference between the value of the rest\nand exercise was calculated for each variable. No significant correlations were found between\nthe HRV and the PET variables in the correlations based on the change in values. The\nassociations of HRV and PET heart variables with the subjects' fitness level, exercise-induced\nheart rate increase, age, and body mass index were also studied. The change in heart rate was\nassociated with RMSSD, LF, and HF. Fitness level correlated with RMSSD and HF, when MBF\nwas associated with heart rate change and fitness level. The results were in part inconsistent\nwith previously limited research data. Other athletes than endurance athletes should be involved\nin further research. In addition, it would be important to study the correlations at different levels\nof exertion in order to obtain more information about the effect of fitness level.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2021-12-20T09:43:28Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-12-20T09:43:28Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "55", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "sykev\u00e4livaihtelu", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "positroniemissiotomografia", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Sykev\u00e4livaihtelumuuttujien yhteydet syd\u00e4men veren virtaukseen, hapen ekstraktioon, veritilavuuteen, veren l\u00e4pivirtausaikaan, vaskulaariseen resistanssiin ja syd\u00e4men pumppauksen taloudellisuuteen levossa ja rasituksessa", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202112206023", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Liikuntatieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sport and Health Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Liikunta- ja terveystieteet", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Sport and Health Sciences", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Liikuntal\u00e4\u00e4ketiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Sport Medicine", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "restrictedAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "5042", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "syd\u00e4n", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "autonominen hermosto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "syke", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "The author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyv\u00e4skyl\u00e4 University Library (https://kirjasto.jyu.fi/collections/archival-workstation).", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "Tekij\u00e4 ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6semalta. Ks. https://kirjasto.jyu.fi/kokoelmat/arkistotyoasema..", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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